We have got to be mature like cheddar used in this delicious snack Paper Time

Reproduction Male Reproductive System Female Reproductive system

Primary Sex Organs vs. Accessories Primary makes gametes Accessories include – ducts, – genatalia – glands

Lets start with the easy stuff 1st Testicles Penis Seminal Vesicles Epididymis Vas Deferens Ejaculatory Duct Prostate Gland Bulbourethral gland Leydig Cell Sertoli Cell

Mitosis vs Meiosis review Meiosis Mitosis

Describe Structure and Function of the gonads and accessories Testicles Penis Seminal Vesicles Epididymis Seminiferous Tubules Vas Deferens Ejaculatory Duct Prostate Gland Bulbourethral gland Chapter 27

Spermatogenesis Starts with 1 “spermatocyte” – Primary germ line End up with 4 spermatids How many chromosomes are in 1 spermatocyte? How many chromosomes are in 1 spermatid?

This meiosis happens in seminiferous tubules

Seminiferous tubules Lumen surounded by Sertoli Cells Help maintain liquid environment of lumen for sperm to develop Prevent blood from traveling to lumen

Gap Junctions of sertoli cells Mitosis of primary spermatocye happens above gap junction Meiosis happens below gap junction between cell membranes

Hormones involved Sertoli cells release messengers in response – Testosterone (T) – Follicle Stimulating Hormone (FSH) – Luetenizing Hormone (LH) – Gonadotrpoin Releasing Hormone (GnRH)

Leydig Cells The ones that generate and release Testosterone (T) T essential for proliferation and differentiation of sperm

Hypothalamus – Pituitary Gland

Quick write: How does the hypothalamus affect the testis?

Spermatogenesis Must be cooler than body temperature

Erectile Tissue